Rolling mill



SephZO, 1932. F. MOLLER ROLLING MILL F iled Dec. 18. 1930 INVNTOR FRI T2MOLLER gm M MM A TTORNE Y5 Patented Sept. 20, 1932 UNITED STATES FRITZ116L133, OF D'UISBURG, GERMANY i nonnme MILL Application. filed ama. 18,1930, Serial No. 503,122, and in Germany January 2, 1930.

My invention relates to rolling mills and particularly to that type ofrolling mills in which there is employed a'plurality of rolls arrangedin sets, the rolls of one set being parallel to each other, but at aright angle to those of the other set, and in which furthermore, eachroll is provided with a plurality of grooves or equivalent operatingportions, the purpose being to bring difierent operating portions of thesets of rolls into operative relation as desired by moving the rolls ofboth sets axially. This neces'sity for adjusting the rolls of both setsi "olves a complication and increased cost, d it is the object of mypresent invention to avoid this difficulty and to provide a constructionin which the adjustment of the rolls is greatly simplified. In thepreferred embodiment of my invention, as illustrated in the accompanyingdrawing, the-,rolls of one set are journalled in stationary bearings,but the rolls of the other set are j ournalled in a frame movable foradjustment, in a direction which is oblique to the direction of therolls of both sets. By simply moving said frame in said obliquedirection, different operating portions of the rolls of'one set can bebrought into cooperative relation to the corresponding operatingportions of the .rolls in the other set.

Without desiring to restrict myself to the particular details'illustrated, -I will now describe a satisfactory embodiment of myinvention with reference to the accompanying drawing in which Fig. 1 isa front elevation of my improved rolling mill, with parts in section;Fig. 2 is a diagrammatic plan View showing the relation of the two setsof rolls; Fig. 3 is a diagrammatic front elevation showing only therolls, in a position corresponding to that of Fig. 1, and Figs. 4 and 5are diagrammatic views showing the rolls in two other operativepositions.

In the drawing the rolls 1 are shown as rotating about horizontal axes,while the axes of the rolls 2 are vertical. For convenience indescription, I will refer to these rolls as horizontal and verticalrolls respectively, but it ill be understood that Ido not thereby resriot myself to this particular position,

since the machine illustrated will operate in any other position. Thetwo horizontal rolls 1 are superposed and journalled in suitablestationary bearings-1'. As will be seen from Fig. 2, the vertical rolls2 are arranged in a diiferent vertical plane from the horizontal rolls1, and as indicated in Fig. 1, thevertical rolls are journalled insuitable bearings in a frame or slide 3 ,movable along a guide or track4 which extends obliquely both to the horizontal and to the, vertical,or in other words, obliquely to the direction of the axes of both setsof rolls. Each of'the rolls 1, 2 is provided with a plurality ofoperating grooves or portions, those of the vertical rolls beingindicated at a, b, a and those of the horizontal rolls at d, e, f. Theframe or slide 3 may be shifted along the track or guide 4 in anysuitable manner, for -instance by means of a spindle 5 held againstrotation but mounted to slide lengthwise in a suitable bearing 5.- Thisspindle has a screwthreaded portion inmesh with a corresponding internalscrewthread on a Worm wheel 7 mounted to rotate in said bearing but heldagainst or operating portion e of the horizontal rolls. 7

and the blank under treatment will be drawn through the rolls along thepath indicated by the line A in Fig. 2. If it is desired to adjust therolls to a different relative position, for instance if the operatingportions .6, e have become worn, the slide or frame '3 is moved up ordown. An upward movement of said slide will bring the operating portionor groove (1. of the vertical rolls'2, at the point where these rollsare closest together, intoline with the operating portion of groove (1of the horizontal rolls 1 at a point where these rolls are closesttogether. Such. upward movement is indicated in Fig. 1 by the arrowextending from a to d, while Fig. 4 indicates diagrammatically, theposition of the two sets of rolls after the grooves a. and d have beenbrought into registry with each other. In Fig. 2, the line B indicatesthe path which the blank will take when the rolls are adjusted to theposition shown in Fig. 4, and dotted lines indicate the position of thevertical rolls with such adjustment. If the slide 3 is moved down, asindicated in Fig. 1 by the arrow extending from a to f, the operatinggroove or portion a of the vertical rolls 2, at the point where they areclosest together,

-will be brought into registry with the oper ating portion or groove 7of the horizontal rolls 1, Where such horizontal rolls are closesttogether. The grooves or operating portions ,0 will thus come intoregistry with the grooves or operating portions f as illustrateddiagrammatically in Fig.5, and the blank will take the path indicated bythe line C in Fig. 2, which likewise indicates at the right by dottedlines, the position which the vertical rolls 2 will take with thisadjustment.

In the embodiment illustrated, the three grooves a, b, 0 are alike andthe grooves d, e, f likewise are alike. With such an arrangementchanging the slide 3 from one of the positions shown in Figs. 3, 4, 5,to one or the other of such positions, would be simply for the purposeof bringing a new operating groove into use after one set of operatinggrooves has become impaired or worn by extended use. I do not, however,wish to restrict myself to a case in which the grooves of the same rollsare alike, but the same apparatus might be employed for operations inwhich the blank is passed successively in contact with operatingportions of different shape. In other words, the grooves a, b, c (andthe grooves d, e, 7) might be of difl'erent size or shape as desired forthe progressive treatment of the blank in a plurality of passes. Forinstance, these grooves might be graduated in size, so that the blankwould first be passed through grooves of a certain width, then, in asecond pax, through grooves of a somewhat smaller width, and finally ina third pass through grooves of still smaller Width. It will, of course,be understood that I do not wish to restrict myself to having the rollsprovided with three grooves or operating portions, but such groovesmight number two, or more than three. These modific'ations and othersmay be made without departing from the nature of my invention as definedin the appended claims.

The rolls of one set are at right angles to those of the other set, in askew relation thereto, since their axes do not intersect.

It "will be noted from Fig. 1 that the grooves a of the vertical rolls 2are at the same distance from the inclined plane in which the slide 3moves, as the grooves (Z of the horizontal rolls 1; this is indicatedclear- 1y by the arrow extending from a to d, which arrow is parallel tothe path of said slide 3. Similarly, as indicated by the arrow extendingfrom 0 to f, the grooves c of the vertical rolls 2 are at the samedistance from the inclined plane above referred to, as the grooves f ofthe horizontal rolls 1. Finally, the grooves b of the vertical rolls 2are at the same distance from the above-mentioned inclined plane, as thegrooves e of the horizontal rolls 1.

The drawing does not show any means for driving the rolls, since thisforms no part of my invention, and any customary or ap proved drive maybe employed.

I claim:

1; A rolling mill comprising two sets of rolls, each roll having aplurality of operating portions at different distances from one of itsends, the rolls of one set being parallel to each other but at rightangles and in skew relation to those of the other set, stationarybearings for the rolls of one set, a slide in which the rolls of theother set are journaled, a guide on which said slide is movable in adirection oblique to the axes of the rolls of both sets, and means formoving said slide.

2. A rolling mill comprising two sets of rolls, each roll having aplurality of operating portions, the rolls of one set being parallel toeach other but at right angles and in skew relation to those of theother set, and

a slide in which the rolls of one of said sets are journaled, said slidebeing movable in a path oblique to the axes of the rolls of both sets,the mating operating portions of the rolls of one set being at the samedistance from the plane of said oblique path as the corresponding matingoperating portions of the rolls of. the other set.

3. A rolling mill comprising two sets of rolls, each roll having aplurality of operating portions, the rolls of one set being in skewrelation to those of the other set, and a slide in which the rolls ofone of said sets are journaled, said slide being movable in a pathoblique to the axes of the rolls of both sets,

the mating operating. port-ions of the rolls FRITZ MoLLER.

